Albeet bbuce jot



UNITED STATES PATENT OFFICE.

ALBERT BRUCE JOY, OF 26 SAVILE BOW, AND JOHN JOSEPH LEWEN, OF

13 BEAUMONT ROAD, OOUN TY OF MIDDLESEX, ENGLAND; SAID LEVVEN ASSIGNOB TOSAID JOY.

PROCESS OF TREATING PLASTER CASTS.

SPECIFICATION forming part of Letters Patent No. 317,369, dated May 5,1885.

Application filed January 3. 1885. (No specimens.) Patented in EnglandOctober 31, 1884, No. 14,430.

To all whom it may concern.-

Be it known that we, ALBERT BRUCE JOY and JOHN JOSEPH LEWEN, bothsubjects of Her Majesty the Queen of Great Britain, re-

5 siding, respectively, at 26 Savile Row and 13 Beaumont Road, in thecounty of Middlesex, England, have invented a certain new and ImprovedProcess of Treating Plaster Casts,

of whichthe following is a specification.

10 The object of this invention is to so treat plaster casts as to givethem the appearance of marble; and to this end ourinvention consists insubmerging the dry plaster casts in a bath of refined linseed or othersuitable oil 1 for a period of six or seven days. The casts are thenremoved from the bath and allowed to stand ina warm place for a periodof, say, four to five days, after which they receive a thin coating offlake-white mixed with refined 2o linseed or other suitable oil orspirit.

Instead of the flake -white, zinc or other white may be employed; but byexperiment we find that the flake-white gives good results.

If it be desired to give the casts the appearance of new marble,finely-flaked mica may be brushed on lightly over the final coating offlake or other white. This mica coating need not be employed except itis desired 30 to produce an imitation of speckled marble.

. WVe are aware that it is not newto bronze ornaments composed ofplaster-of-pariswood, iron, 850., with varnish of different colors toprotect them from the action of the Weather; and

\Vhat we therefore claim, and desire to secure by Letters Patent, is

1. Theimproved process of treating plaster casts, which consists infirst submitting them to the action of an oil bath, then drying andsubsequently coating them with flake or other suitable white,substantially as described, and for the purpose set forth.

2. The improved process of treating plaster casts, which consists infirst submitting them to the action of an oil bath, then drying, thencoating with a flake or other suitable white, and subsequently brushingthem over lightly with finely-flaked mica, substantially as de scribed,and for the purposes set forth.

ALBERT BRUCE JOY. JOHN JOSEPH LEVVEN.

WVitnesses:

T. DANT, l3 Beazmwnt Rd, West Kensington.

LEOPOLD LASKY, l0 Seagrave Road, Lillie Bridge, Fwlham, 5. W

